I had Bob Gill as a professor when I studied at Parsons School of Design back in the early 80s. He was often abusive and humiliating to his students. However, I learned more from him about the thinking process behind design than all my other professors combined, and I have carried those lessons with me to this day. This book was essentially the study guide for his class. The projects are a bit dated now, but the concepts are timeless. Thanks, Bob.